Yep, that’s how they work on my T440. It’s quite convenient even if I don’t trust them to stay in at times (one managed to fall out already)

Weird, the software manager (using LM 21.3) reports 1.1GB dl, 2.4GB installed (which is different from when i checked yesterday for some reason?). flatpak install reports around 2.1GB of dependencies and the package itself at just 1.3MB

EDIT: nvm im stupid, the other reply explains the discrepancy

It CAN get pretty wild sometimes, though. For example, Flameshot (screenshotting utility) is only ~560KB as a system package, while its flatpak version is ~1.4GB (almost 2.5k times as big)